Lifting up the Trousers before Proceeding into Sajdah

Q: Salaah-419: Will any harm be caused to the salaah if a person lifts up his trousers before proceeding into Sajdah and lowers the back of his Kurya when getting up?

Answer: Such a habit is Makrooh without any doubts and may well be regarded as an excessive act (Amal Katheer), which will nullify the salaah. And Allaah knows best what is most correct.

Fatawa Rahimiyyah vol.2